KCET2019ChemistryElectrochemistry
One litre solution of ( MgCl ₂ ) is electrolyzed completely by passing a current of ( 1 ~A ) for ( 16 5 ) sec. The original concentration of ( MgCl ₂ ) solution was (Atomic mass of ( Mg =24 ) )
Options
- A( 0.5 10⁻³ M )
- B( 1.0 10⁻² M )
- C( 5 10⁻³ M )
- D( 5 10⁻² M )
Correct answer
C. ( 5 10⁻³ M )
Step-by-step solution
(C) [ array l m= E I Z 96500 = 12 1 965 96500 =12 10⁻² g Molarity, M= w₂ M₂ 1000 V_ wat = 12 10⁻² 24 1000 1000 =0.5 10⁻² M=5 10⁻³ M array ]